PatchSiren cyber security CVE debrief
CVE-2026-111702 sugarforever CVE debrief
CVE-2026-111702 is a high-severity vulnerability in ChatOllama, a GitHub repository by sugarforever, which allows remote attackers to access private knowledge bases due to an insecure direct object reference (IDOR) vulnerability. The vulnerability exists through commit 96c3ce5 and can be exploited by supplying sequential IDs to enumerate and access other users' private knowledge bases.
- Vendor
- sugarforever
- Product
- chat-ollama
- CVSS
- HIGH 8.7
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-10-16
- Original CVE updated
- 2026-10-16
- Advisory published
- 2026-10-16
- Advisory updated
- 2026-10-16
Who should care
Defenders responsible for ChatOllama deployments, especially those using versions up to commit 96c3ce5, should assess exposure and verify the effectiveness of current access controls and monitoring. This includes developers, security teams, and IT professionals managing ChatOllama instances.
Why it matters
CVE-2026-111702 is a high-severity IDOR vulnerability in ChatOllama that allows remote attackers to access private knowledge bases. Defenders should verify exposure, assess access controls, and prioritize remediation due to the potential for unauthorized access to sensitive information.
- Remote attackers can access private knowledge bases without authentication.
- Enumeration of knowledge base IDs is possible, allowing for potential reconnaissance.
- Access to metadata and document content of other users' knowledge bases is possible.
- Verification of access controls and monitoring effectiveness is necessary.
Technical summary
The ChatOllama application through commit 96c3ce5 contains an insecure direct object reference (IDOR) vulnerability. This vulnerability allows remote attackers to access other users' private knowledge bases by supplying sequential IDs. The vulnerability can be exploited through GET /api/knowledgebases/{id} or the knowledgebaseId parameter of POST /api/models/chat, allowing attackers to read metadata and retrieved document content.
Defensive priority
Defenders should prioritize verifying exposure of ChatOllama deployments, especially those using versions up to commit 96c3ce5, and assess the effectiveness of current access controls and monitoring.
Recommended defensive actions
- Verify ChatOllama deployments for exposure, especially those using versions up to commit 96c3ce5.
- Assess the effectiveness of current access controls and monitoring for ChatOllama knowledge bases.
- Consider upgrading to a version beyond commit 96c3ce5 if available.
- Monitor for unusual activity or enumeration attempts on knowledge base IDs.
- Perform a thorough review of ChatOllama knowledge base access controls to prevent unauthorized access.
- Implement additional monitoring to detect potential exploitation attempts.
- Conduct a security audit to identify and address any other potential vulnerabilities.
Evidence notes
The CVE record and source item provide details on the vulnerability, including its existence through commit 96c3ce5 and the potential for remote attackers to access private knowledge bases. However, specific details on affected versions beyond this commit and the exact scope of exploitation are limited.
Sources and references
Verified primary and authoritative sources
-
CVE-2026-111702 CVE Program record
Publisher, destination, and source semantics verified
URL: https://www.cve.org/CVERecord?id=CVE-2026-111702
CVE Program - Official CVE Program record with source-provided CVE metadata.
-
CVE-2026-111702 NVD vulnerability detail
Publisher, destination, and source semantics verified
URL: https://nvd.nist.gov/vuln/detail/CVE-2026-111702
NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.
Supplemental references
-
ChatOllama through commit 96c3ce5 IDOR Exposes Private Knowledge Bases
Unverified legacy reference
URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/111xxx/CVE-2026-111702.json
cve_program_cvelist_v5
-
Source reference
Unverified legacy reference
URL: https://hackmd.io/@hieuPenguinnn/chat-ollama-knowledge-base-cross-user-idor
Supplemental source - third-party-advisory
-
Source reference
Unverified legacy reference
URL: https://github.com/sugarforever/chat-ollama/blob/6f4245a96b58ce8833a8c51d90d923b0e9814784/server/api/models/chat/index.post.ts
Supplemental source - technical-description
-
Source reference
Unverified legacy reference
URL: https://github.com/sugarforever/chat-ollama/blob/6f4245a96b58ce8833a8c51d90d923b0e9814784/server/api/knowledgebases/%5Bid%5D.get.ts
Supplemental source - technical-description
-
Source reference
Unverified legacy reference
URL: https://www.vulncheck.com/advisories/chatollama-through-commit-96c3ce5-idor-exposes-private-knowledge-bases
Supplemental source - third-party-advisory
Methodology and review provenance
AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.